| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.vfs2.provider.local; |
| |
| import java.net.URI; |
| |
| import org.apache.commons.vfs2.FileName; |
| import org.apache.commons.vfs2.FileSystemException; |
| import org.apache.commons.vfs2.FileType; |
| import org.apache.commons.vfs2.provider.AbstractFileNameParser; |
| import org.apache.commons.vfs2.provider.UriParser; |
| import org.apache.commons.vfs2.provider.VfsComponentContext; |
| |
| /** |
| * A name parser. |
| */ |
| public abstract class LocalFileNameParser extends AbstractFileNameParser { |
| |
| protected abstract FileName createFileName(String scheme, final String rootFile, final String path, |
| final FileType type); |
| |
| /** |
| * Pops the root prefix off a URI, which has had the scheme removed. |
| * |
| * @param name the URI to modify. |
| * @param uri the whole URI for error reporting. |
| * @return the root prefix extracted. |
| * @throws FileSystemException if an error occurs. |
| */ |
| protected abstract String extractRootPrefix(final String uri, final StringBuilder name) throws FileSystemException; |
| |
| private String[] getSchemes(final VfsComponentContext context, final FileName base, final String uri) { |
| if (context == null) { |
| return new String[] { base != null ? base.getScheme() : URI.create(uri).getScheme() }; |
| } |
| return context.getFileSystemManager().getSchemes(); |
| } |
| |
| /** |
| * Determines if a name is an absolute file name. |
| * |
| * @param name The file name. |
| * @return true if the name is absolute, false otherwise. |
| */ |
| public boolean isAbsoluteName(final String name) { |
| // TODO - this is yucky |
| final StringBuilder b = new StringBuilder(name); |
| try { |
| UriParser.fixSeparators(b); |
| extractRootPrefix(name, b); |
| return true; |
| } catch (final FileSystemException e) { |
| return false; |
| } |
| } |
| |
| @Override |
| public FileName parseUri(final VfsComponentContext context, final FileName base, final String uri) |
| throws FileSystemException { |
| final StringBuilder name = new StringBuilder(); |
| |
| // Extract the scheme |
| String scheme = UriParser.extractScheme(getSchemes(context, base, uri), uri, name); |
| if (scheme == null && base != null) { |
| scheme = base.getScheme(); |
| } |
| if (scheme == null) { |
| scheme = "file"; |
| } |
| |
| // Remove encoding, and adjust the separators |
| UriParser.canonicalizePath(name, 0, name.length(), this); |
| |
| UriParser.fixSeparators(name); |
| |
| // Extract the root prefix |
| final String rootFile = extractRootPrefix(uri, name); |
| |
| // Normalise the path |
| final FileType fileType = UriParser.normalisePath(name); |
| |
| final String path = name.toString(); |
| |
| return createFileName(scheme, rootFile, path, fileType); |
| } |
| } |